Chemistry 161 Sample Quiz Chapters 1&2 KEY Harold Note: You have already received a significant figures/scientific notation sample quiz. The first ten problems (20 points) will be of exactly the same type. The numbers will be changed to offend the guilty (those who did not use the sample test as a study guide). 1. The term that refers to the reproducibility of a laboratory measurement is a. precision. b. repeatability. c. accuracy. d. exactness. e. the number of S.F. 2. The distance
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Elasticities & Welfare Price elasticity of demand: How to calculate Sign and sizes – illustration by demand curve E & TR Determinants/factors MCQs: 1. Question 4 (Quiz - topic 3): If Sam‚ the Pizza Man‚ lowers the price of his pizzas from $6 to $5 and finds that sales increase from 400 to 600 pizzas per week‚ then the demand for Sam’s pizzas in this range is: a. price inelastic. b. price elastic. c. unit elastic. d. cross elastic. e. income inelastic. 2. Question 6 (Quiz - topic 3):
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4th form Chemistry questionnaire 1. All of the following structures show the same molecule‚ except one. Which structure is different? H H H H A) H -- C -- C -- C --- C -- H B) CH3 CH2 CH2 CH3 H H H H H H -- C -- H CH3 C) H H D)
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Challenge question for Quiz 2 1. What group of compounds are usually the second most abundant (by weight) in fruit after water? 2. What is the major difference between fruit and vegetables in terms of their botanic origin? 3. List the intrinsic and external factors which can affect the respiration rate of fruit and vegetables 4. What are the major differences between climacteric and non-climacteric fruits? 5. What is role of ethylene in fruit ripening? 6. Describe the relationship between temperature
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Sustainable Development for the Benefit of Human Welfare In recent years‚ with the development of society and economy‚ some of the non-renewable resources‚ such as coal‚ oil‚ natural gas‚ gradually consumed by human beings. Nearly since 1980s‚ people have realized the severity of the problem and the discussions about sustainable development have become the hit topic among public‚ and up till now‚ it is also a controversial problem. According to the view of environmental and economic experts
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Question 1 0 out of 2 points When electricity is passed through molten potassium bromide‚ two simpler substances‚ potassium and bromine‚ are produced. Therefore‚ potassium bromide Selected Answer: has less mass than the resulting potassium and bromine do. Correct Answer: cannot be an element. Question 2 2 out of 2 points Which of the following parts (postulates) of Dalton’s atomic theory has been modified in light of later discoveries? Selected
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Lab Report Experiment 1 & 2 CHM-101 Amele Takpara Partner: Jessamyn Dupree ------------------------------------------------- Experiment 1 ------------------------------------------------- (Pre-Lab Questions) 1. In the design of a Bunsen burner‚ explain the purpose of a. the gas control valve The gas control valve regulates the rate at which methane enters the burner. b. and the air vents. The air vents control the rate at which air enters the burner 2. Why is a luminous
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DECEMBER 8‚ 2014 HRM CASE STUDY COMPANY: TRADEKEY CO. Topic: Organization and Employee Welfare Fall 2014 Submitted By: Muhammad Raza Javed Mirza Jawad Hassan Nausherwan Khan Siraj Ur Rehman Syed Osama Ali Sajjad Ali Contents Executive Summary....................................................................................................................................... 2 Introduction to Company.............................................................................................
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CHAPTER 12 Fiscal Policy A. Short-Answer‚ Essays‚ and Problems 1. Give a brief definition of fiscal policy? What are its economic goals? 2. What is the Council of Economic Advisers? 3. “The Employment Act of 1946 is no more than a vague and ill-defined commitment by the Federal government to assist in the achievement of full employment.” Do you agree? Explain. 4. Explain the effect of a discretionary cut in taxes of $40 billion on the economy when the economy’s marginal propensity to consume
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Unit 18 B Study Guide 1. Find the solubility (in mol/L) of lead(II) chloride (PbCl2) at 25oC. Ksp = 1.62e–5. A) 1.59e–2 B) 2.53e–2 C) 6.64e–17 D) 2.01e–3 E) 2.01e–2 2. The two salts AgX and AgY have very similar solubilities in water. It is known that the salt AgX is much more soluble in acid than is AgY. What can be said about the relative strengths of the acids HX and HY? A) Nothing. B) HY is stronger than HX. C) HX is stronger than HY. D) The acids have equal strengths. E)
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